Franklin W.Dixon. (2007). Hardy Boys: Foul Play. Simon & Schuster.
Cita Chicago (17th ed.)Franklin W.Dixon. Hardy Boys: Foul Play. New York: Simon & Schuster, 2007.
Cita MLA (9th ed.)Franklin W.Dixon. Hardy Boys: Foul Play. Simon & Schuster, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.